Attachment for ore-sampling machines.



A No. 683,844. Paternal: oct. l, |901.

A. c. cALKms.

ATTACHMENT FDR DBE SAMPLING MACHINES.

{Applicuton led Feb. 12, 1901.)

(No Model.)

/N VE N TOI? A Zev 01212/11716 A TTOHNEYS UNiTnD STATES PATENT Ormel-3..,`

ALBERT CIIAMPLIN CALKINS, OF LOS ANGELES, CALIFORNIA, ASSIGNOR TO FREDERICK NV. BRAUN, OF SAME PLACE. i

ATTACHMENT FOR ORE-SAMPLING MACHINES.

SPECIFICATION formingpart of Letters Patent No. 683,844, dated October 1, 1901- Applioation led IebruarylZ. 1901. Serial No. 46,970. (No model T0 LZZ whom, t may concern.-

Be it known that I, ALBERT CHAMPLIN CALKINS, of Los Angeles, in the county of Los Angeles and State of California, have invented a new and useful Improvement in Attachments for Ore-Sampling Machines, of which the following is a specification.

My invention is in the nature ofan attachment for the oreasalnpling machine for which an application for a patent, Serial No. 36,990, was filed by me November 19, 1900. In that application a peculiar construction and arrangement of buckets with radial partitions and gears for rotating them in opposite directions were combined with a superposed hopper and means for agitating it to promote its feed. In such construction it has been found desirable to provide means for preventing the shaking of the hopper until the rotation of the buckets shall have attained such a speed as to secure a uniform distribution of the pulverized ore into the several compartments of the buckets instead of dumping a large quantity into some of the compartments and an insufficient quantity in the others, as would be the case if the agitation of the hopper and the starting of the rotation of the buckets were simultaneous.

My invention comprises a simple attachment to be combined with the before-named elements of the ore-sampling machine,where by the agitation of the hopper may be controlled or regulated independently of the rotation of the buckets, as hereinafter fully described with reference to the drawing, in which the figure is a perspective view of my ore-sampling machine with my attachment applied thereto.

In the drawing, S S' represent the two pipesections, forming a vertical standard provided with a suitable base at the lower end and having a couplingF,on which is formed a laterally-projecting frame d', in which are arranged bevel-gears that drive the two buckets B and C with an opposite rotation. These buckets have a series of radial partitions forming equal compartments, and one halt' of the compartments'of the upper bucket are open at the bottom and discharge into the lower bucket, while the other half alternate with the first-named compartments and are closed at the bottom, so as to retain their contents. The buckets are rotated through bevel-gears from a horizontal shaft D, which has its bearings in coupling F, and on one side extends to the middle of the frame d', where the bevel-gears are located, and on the other end outside the coupling F has a rigidly-attached four-phase cam e and a crank-shaft E.

Gis a rod which at its upper end is loosely connected to a casting on the bottom of the hopper A,which rocks on the top of the standard. The lower end of this rod is bent at right angles to the main section and passes under the cam e, in range of contact therewith, and is pivoted or jointed to a stud p on `a projection from the coupling F.

As so far described the machine does not differ from that already embodied in my previous application, and when the buckets are rotated through crank E it will be seen that the cam e, with a tappet action on the lower bent end of shaker-rod G, imparts an agitation to the hopper on its rocking pivots that causes it to begin to vibrate as soon as the buckets begin to rotate. In a device which is intended to accurately subdivide the materials in aliquot samples this is a serious objection, because in first starting the machine a large quantity of material is liable to be slopped into any one of the compartments of the bucket before it attains any speed, which destroys the accuracy of subdivision. I overcome this diiculty by a simple attachment, as follows: On the stud p I fulcrum a lever Z, and the lever outside thefulcrum is connected by a rod m with the rocking casting which holds the hopper. The shaker-rod Gr is also formed at its lower end into a series of spring coils or convolutions g. Now when the levert is depressed, as in starting the machine, the downward pull on rod m tilts back the hopper A and forces down the shaker-rod G, which freely descends by reason of the spring-coils at g` until the lower end or horizontal portion is thrown below the range of contact with the cam e, so that the buckets may be rotated without starting the feed from the hopper. lVhen the required speed of the buckets is attained, the lever Z is gradually raised to bring the lower end of IOO the shaker-rod in contact with the caln, and by holding or adjusting it to different positions any degree of shake may be imparted to the hopper that may be desired.

Having thus described my invention, what I claim as new, and desire to secu re by Letters Patent, is-

l. The combination with the rotating bucket and a shaking hopper in a sampling-machine; of a common means for actuating both these parts, and a device for holding stationary the hopper while the buckets are being raised to the requisite speed substantially as described.

2. The combination with the rotating sanipling device, a feeding device and a common means for actuating them; of a device for restraining the action of the feed device While the sampling device is being raised to the requisite speed of rotation substantially as and for the purpose described.

3. The combination of a vertical standard, a frame supportinga rotating bucket, a horizontal driving-shaft with a cam, a rocking hopper, a shaker-rod extending to the cam, and a lever and restraining-rod extending to the hopper and adapted to depress the latter and its shaker-rod to a position Wholly or partially out of contact with the cam substantially as described.

4. The combination of a vertical standard,

a frame supporting a rotating bucket, a horizontal driving-shaft with a cam, a rocking hopper, a shaker-rod attached thereto and bent at right angles at the lower end with a coil at the angle, and then being extended beneath the cam and pivoted to a stationary support, a lever fulcrumed on this support, and a restraining-rod extending from the 1ever to the hopper for separating the shakerrod from the cam as described.

ALBERT OHAMPLIN GALKINS.

Wfitnesses:

R. M. XVEED, HTM. KENNEDY. 

